Certified Rhythm Analysis Technician (CRAT) Practice Exam

The method of moving the ECG plug to a different outlet is effective for troubleshooting 60-cycle ECG interference because this type of interference typically arises from electrical noise in the environment, often caused by electromagnetic interference, such as from electrical devices or wiring in the facility.

By changing the outlet, you can potentially reduce or eliminate the interference because the new location may not be subjected to the same electrical noise as the original outlet. It helps in isolating the ECG device from sources of interference that could affect the quality and accuracy of the ECG readings.

The other methods mentioned do not directly address the problem of 60-cycle interference. Although having the patient hyperventilate might affect the ECG for different reasons, it doesn't target electrical interference. Adjusting the standardization mark is more about ensuring correct calibration of the ECG readings rather than addressing interference noise. Cleaning the skin with isopropyl alcohol is important for electrode adhesion and reducing impedance but does not resolve issues caused by electrical interference.